1 files changed, 63 insertions, 0 deletions
diff --git a/ci_tools/make_zonefile_metadata.py b/ci_tools/make_zonefile_metadata.py
new file mode 100755
index 0000000..39bd551
--- /dev/null
+++ b/ci_tools/make_zonefile_metadata.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+import hashlib
+
+ZONEFILE_METADATA_TEMPLATE = """{{
+    "metadata_version": 2.0,
+    "releases_url": [],
+    "tzdata_file": "{tzdata_file}",
+    "tzdata_file_sha512": "{tzdata_sha512}",
+    "tzversion": "{tzdata_version}",
+    "zonegroups": [
+        "africa",
+        "antarctica",
+        "asia",
+        "australasia",
+        "europe",
+        "northamerica",
+        "southamerica",
+        "pacificnew",
+        "etcetera",
+        "systemv",
+        "factory",
+        "backzone",
+        "backward"
+    ]
+}}
+"""
+
+
+def calculate_sha512(fpath):
+    with open(fpath, 'rb') as f:
+        sha_hasher = hashlib.sha512()
+        sha_hasher.update(f.read())
+        return sha_hasher.hexdigest()
+
+
+if __name__ == "__main__":
+    import argparse
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('tzdata', metavar='TZDATA',
+                        help='The name tzdata tarball file')
+    parser.add_argument('version', metavar='VERSION',
+                        help='The version of the tzdata tarball')
+    parser.add_argument('out', metavar='OUT', nargs='?',
+                        default='zonefile_metadata.json',
+                        help='Where to write the file')
+
+    args = parser.parse_args()
+
+    tzdata = args.tzdata
+    version = args.version
+    sha512 = calculate_sha512(tzdata)
+
+    metadata_file_text = ZONEFILE_METADATA_TEMPLATE.format(
+        tzdata_file=tzdata,
+        tzdata_version=version,
+        tzdata_sha512=sha512,
+    )
+
+    with open(args.out, 'w') as f:
+        f.write(metadata_file_text)
+